noun
small projection; small protuberance
Technical term used in anatomy, biology, and engineering to describe a small bump or outgrowth.
この細胞の表面には小突起が多数見られる。
Many small projections can be seen on the surface of this cell.
部品の小突起が他の部品と干渉しないように設計する。
Design the part so that its small protuberance does not interfere with other parts.